海洋生物学

台风过境前后南海北部水体浮游有孔虫群落变化

  • 刘芳 ,
  • 向荣 ,
  • 张兰兰 ,
  • 陈木宏
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  • 1. 中国科学院边缘海地质重点实验室, 中国科学院南海海洋研究所, 广东 广州 510301; 
    2. 中海油能源发展股份有限公司钻采工程研究院深圳实验研究中心, 广东 深圳 518054
刘芳(1985—), 女, 湖北省孝感市人, 硕士研究生, 主要从事微体古生物与海洋沉积古环境研究。

收稿日期: 2011-02-28

  修回日期: 2011-05-25

  网络出版日期: 2012-10-24

基金资助

国家自然科学基金项目(40676042、40976031); 国家重点基础研究发展计划项目(2010CB428901); 中国科学院知识创新工程项目(KZCX2-YW-228); 中国科学院南海海洋研究所知识创新工程领域前沿项目(LYQY200704)

Influences of typhoon on planktonic foraminiferal fauna in the northern South China Sea

  • LIU Fang ,
  • XIANG Rong ,
  • ZHANG Lan-lan ,
  • CHEN Mu-hong
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  • 1. Key Laboratory of Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; 
    2.Shenzhen Central of laboratory and Institution, Energy Technology and Services-Oilfield Engineering Research Institute, China National Offshore Oil Corp., Shenzhen 518000, China

Received date: 2011-02-28

  Revised date: 2011-05-25

  Online published: 2012-10-24

摘要

通过2008年8月南海北部浮游有孔虫拖网调查, 对12号台风“鹦鹉”过境前后南海北部水体中的活体浮游有孔虫群落进行了对比分析, 结合海洋环境参数, 初步探讨了台风对水体浮游有孔虫群落分布的影响, 以增加对浮游有孔虫群落的环境生态的了解, 为古环境重建积累基础资料。结果显示, 台风过境后的浮游有孔虫丰度较台风来临前有明显降低, 优势属种Globigerinoides sacculifer的相对百分含量在台风过境后有明显的降低, 而生活在次表层水体中的Globigerina calida和Globigerinella aequilateralis的相对百分含量则在台风过境后明显上升。研究认为台风过境造成的水体垂直混合增强可能是导致浮游有孔虫群落变化的主要因素。

本文引用格式

刘芳 , 向荣 , 张兰兰 , 陈木宏 . 台风过境前后南海北部水体浮游有孔虫群落变化[J]. 热带海洋学报, 2012 , 31(4) : 90 -95 . DOI: 10.11978/j.issn.1009-5470.2012.04.012

Abstract

Eight plankton tow samples were obtained from the northern South China Sea (SCS) during Typhoon “NURI ” (200812) in August 2008. Through planktonic foraminiferal analysis, together with in-situ measurements of environmental parameters, the influence of typhoon on the living planktonic foraminifera was discussed. Such study can improve our understanding of the environmental and ecological communities of planktonic foraminifera, and of applying basic data for palaeoenvironmental reconstruction. Compared with pre-typhoon oceanographic conditions, the abundance of living planktonic foraminifera decreased greatly after the typhoon passed, so did the relative abundance of dominated species Globigenoides sacculifer; in contrast, subsurface-dwelling species Globigerina calida and Globigerinella aequilateralis showed increased relative abundance in the after-typhoon waters. The results suggest that the enhanced vertical mixing of upper water caused by the typhoon was the main factor that leads to the changes of planktonic foraminiferal fauna in the northern SCS.

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